We're dividing 54315871 by 390 
We're looking to find how many times 390 goes into 54315871.

Advancing to step 1:
If we divide 5 by 390, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 390

Let's proceed to step 2:
If we divide 54 by 390, we get 0 and a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Take the next digit (3) from the dividend and append it to 54, then repeat: 543 / 390

Advancing to step 3:
The number 390 fits into 543 1 times, leaving a remainder of 153.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 153 after subtracting 390 from 543.
Take the next digit (1) from the dividend and append it to 153, then repeat: 1531 / 390

Moving on to step 4:
1531 divided by 390 is 3 with a remainder of 361.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1170 from 1531 to get 361.
Take the next digit (5) from the dividend and append it to 361, then repeat: 3615 / 390

Step 5:
3615 divided by 390 is 9 with a remainder of 105.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
If we take 3510 away from 3615, we end up with 105.
Grab the next digit (8) from the dividend, add it to 105, then carry on: 1058 / 390

Moving on to step 6:
1058 divided by 390 is 2 with a remainder of 278.
Put 2 as the next digit of the answer. 
Result so far: 1392.0
Deduct 780 from 1058 and we're left with 278.
Bring next digit (7) of the dividend behind the 278 and repeat the process: 2787 / 390

Moving on to step 7:
390 goes into 2787 7 times with a remainder of 57.
Put 7 as the next digit of the answer. 
Result so far: 13927.0
If we take 2730 away from 2787, we end up with 57.
Bring next digit (1) of the dividend behind the 57 and repeat the process: 571 / 390

Advancing to step 8:
390 goes into 571 1 times with a remainder of 181.
Use 1 as the next digit of our solution. 
Result so far: 139271.0
If we subtract 390 from 571, we get 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Going ahead to step 9:
390 can be fit into 1810 4 times, resulting in a remainder of 250.
The number 4 becomes the next digit in our result. 
Result so far: 139271.4
If we take 1560 away from 1810, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 10:
If we divide 2500 by 390, we get 6 and a remainder of 160.
Put 6 as the next digit of the answer. 
Result so far: 139271.46
The remainder is 160 after subtracting 2340 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 11:
The number 390 fits into 1600 4 times, leaving a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 139271.464
The remainder is 40 after subtracting 1560 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
390 can be fit into 400 1 times, resulting in a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 139271.4641
Deduct 390 from 400 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
When dividing 100 by 390, we get 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 139271.4641
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 14:
If we divide 1000 by 390, we get 2 and a remainder of 220.
Put 2 as the next digit of the answer. 
Result so far: 139271.464102
If we take 780 away from 1000, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 15:
390 can be fit into 2200 5 times, resulting in a remainder of 250.
The next digit of our result is 5. 
Result so far: 139271.4641025
If we take 1950 away from 2200, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 16:
If we divide 2500 by 390, we get 6 and a remainder of 160.
The number 6 becomes the next digit in our result. 
Result so far: 139271.46410256
Deduct 2340 from 2500 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

The quotient of the division is 139271.46410256, and the remainder is 1.6e-07.